Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f2a7ad311a91d4…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 04:31:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1e4f8f15473fef6615241e757076730 SHA-1: 3d9c817459ed598ec09173ced0d0e45befba8c08 SHA-256: 06f2a7ad311a91d47e46c1acebf614ab1835f47d7cf4d18d2b11712f8ec47cac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/835599320/tiktok-free-book-website-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C2 25180 bytes
SHA-256: 860f338ad9b464008859bb290db55954956d84db76ced97a92dfa6c0e3cf0e6f
font_01_sfnt_off00008107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8107 18028 bytes
SHA-256: b33c4ba645c868f474bb2d5ceae1113765dc1a0d1d4bfd4877a8be800b37e893

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